Facsimile communication system
CA 2238156 C · Owner: Izumi, Kouichi · Inventors: Izumi, Kouichi; Chimura, Yasubumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pixel information and control information transmitted by a facsimile machine 1a is received by a procedure controlling circuit 13 having a MODEM 13a for facsimile machines. A facsimile procedure controller 14 decodes the pixel information and the control information. A connection/transfer controller 15 edits the decoded information and produces a control packet and a pixel packet. The control packet and the pixel packet are output to a local area network (LAN) 4 via a LAN controller 17 and a LAN control circuit 18. When receiving a facsimile, the control packet signal transmitted via the LAN 4 is converted into pixel control information by the connection/transfer controller 15 and the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 21, 1998 and granted March 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.